Biological Molecules
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name the 4 elements required for living processes
Carbon Hydrogen Nitrogen Oxygen
inorganic ions are an example of what nutrient?
macronutrient
magnesium is a constituent of what in plants?
chlorophyll, essential for photosynthesis
what happens to plants if there is no magnesium in the soil?
their leaves turn yellow (chlorosis)
which inorganic ion is a constituent of haemoglobin?
iron
the inorganic ion phosphate is used for making what?
nucleic acids
phosphate is a constituent of what, found in plasma membranes
phospholipids
calcium provides strength to what in plants?
cell walls
name the inorganic ions important for living processes
magnesium iron phosphate calcium
which nutrient is need in minute amounts?
micronutrients
which nutrient is needed in small amounts?
macronutrients
what are some examples of a micronutrient?
copper and zinc ions
define a compound
two or more atoms chemically joined together
what contains protons, neutrons and electrons?
atoms
what consists of only one type of atom
an element
define organic
compounds based on carbon and contain carbon bonded to hydrogen
define inorganic
compounds that do not contain carbon bonded to hydrogen
what are some examples of inorganic?
water carbon dioxide
what is a molecule?
consists of more than one type of atom
carbohydrates and proteins can form very large what?
polymers
what are polymers made up of?
smaller molecules called monomers linked together
define polymerisation
linking together of identical monomers to form polymers
What happens when two monomers link together?
a molecule of water is eliminated (condensation)
What reaction occurs when many monomers link to form a polymer?
Condensation